On Channel Correlation Based Scheduling and Signalling for MIMO-OFDMA Downlink

Andreas Ibing, Holger Boche, Philipp Otto
2011 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)  
For joint MIMO-OFDMA link adaptation and scheduling, channel quality feedback needs to be quantized, sparse and irregular. For flexible scheduling, prediction of the quantized channel at the base-station is needed. We propose measurement of 3D channel correlation parameters by the terminals and signalling back to the base station, which enables prediction of the quantized channel by multi-dimensional Wiener filtering. The scheme is shown to improve adaptive choice of transmission parameters and
more » ... to avoid mis-adaptation due to control lag. Different schemes of correlation feedback signalling are discussed in terms of (time-variant) expected throughput.
doi:10.1109/vetecs.2011.5956189 dblp:conf/vtc/IbingBO11 fatcat:o2d4vjo3knhgxlnvspszom2zy4